Potato cells showing starch grains

Potato cells showing starch grains

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Credit: DR JEREMY BURGESS/SCIENCE PHOTO LIBRARY

Caption: Scanning electron micrograph of a slice through a raw potato, Solanum tuberosum, showing starch grains, or amyloplasts, within their cellular compartments. Due to the angle of sectioning, some cells show no starch grains. Starch is synthesised from sucrose, a sugar formed in the leaves during photosynthesis & transported to the tuber (potato) via the phloem (vascular tissue). It is used as an energy store for the later development of buds on the surface of the potato. The starch grains here are up to 50 microns across, larger than most plant cells. Magnification: x25 at 35mm size, x200 at 8x10-inch size. (Compare with B100/018, which shows a similar section after cooking). Reference: MICROCOSMOS, figure 9.20, page 185.

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Keywords: amyloplast, botanical science, botany, cell, cells, plant structure, plastid, plastids, potato, raw, scanning electron micrograph, sem, solanum tuberosum, starch grain, stem, tuber

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